Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America
Abstract We measured fresh body mass, total body fat, and fat-free dry mass (FFDM) of three species of Arctic-nesting calidrid sandpipers (Baird's Sandpiper [Calidris bairdii], hereafter “BASA”; Semipalmated Sandpiper [C. pusilla], hereafter “SESA”; and White-rumped Sandpiper [C. fuscicollis],...
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Oxford University Press (OUP)
2006
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Online Access: | http://dx.doi.org/10.1093/auk/123.2.323 http://academic.oup.com/auk/article-pdf/123/2/323/29691764/auk323.pdf |
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croxfordunivpr:10.1093/auk/123.2.323 2024-09-09T19:22:59+00:00 Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America Krapu, Gary L. Eldridge, Jan L. Gratto-Trevor, Cheri L. Buhl, Deborah A. Haukos, D. A. 2006 http://dx.doi.org/10.1093/auk/123.2.323 http://academic.oup.com/auk/article-pdf/123/2/323/29691764/auk323.pdf en eng Oxford University Press (OUP) The Auk volume 123, issue 2, page 323-334 ISSN 1938-4254 0004-8038 journal-article 2006 croxfordunivpr https://doi.org/10.1093/auk/123.2.323 2024-08-19T04:24:10Z Abstract We measured fresh body mass, total body fat, and fat-free dry mass (FFDM) of three species of Arctic-nesting calidrid sandpipers (Baird's Sandpiper [Calidris bairdii], hereafter “BASA”; Semipalmated Sandpiper [C. pusilla], hereafter “SESA”; and White-rumped Sandpiper [C. fuscicollis], hereafter “WRSA”) during spring stopovers in the Prairie Pothole Region (PPR) of North Dakota, and evaluated the contribution of stored fat to (1) energy requirements for migration to their Arctic-breeding grounds and (2) nutrient needs for reproduction. All spring migrant WRSA (n = 124) and BASA (n = 111), and all but 2 of 99 SESA we collected were ≥2 years old. Male and female BASA migrated through North Dakota concurrently, male SESA averaged earlier than females, and WRSA males preceded females. Fat indices (ratio of fat to FFDM) of male and female SESA and WRSA averaged approximately twice those of male and female BASA. Total body fat of male and female BASA increased with date in spring 1980, but not in 1981; slopes were similar for both sexes each year. Male and female SESA arrived lean in 1980 and 1981, and total body fat increased with date in both years, with similar slopes for all combinations of sex and year. Male and female WRSA arrived lean in 1980–1981 and 1981, respectively, and total body fat increased with date, whereas females arrived with fat reserves already acquired in 1980. Interspecific and sex differences in migration schedules probably contributed to variation in fat storage patterns by affecting maintenance energy costs and food availability. Estimated flight ranges of BASA suggest that few could have met their energy needs for migration to the breeding grounds exclusively from fat stored by the time of departure from North Dakota. Estimated flight ranges of SESA and WRSA, along with fresh body masses of both species when live-trapped on or near their breeding grounds in northern Canada, suggest that major parts of both populations stored adequate fat by departure from temperate mid-continental ... Article in Journal/Newspaper Arctic Oxford University Press Arctic Canada The Auk 123 2 323 334 |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract We measured fresh body mass, total body fat, and fat-free dry mass (FFDM) of three species of Arctic-nesting calidrid sandpipers (Baird's Sandpiper [Calidris bairdii], hereafter “BASA”; Semipalmated Sandpiper [C. pusilla], hereafter “SESA”; and White-rumped Sandpiper [C. fuscicollis], hereafter “WRSA”) during spring stopovers in the Prairie Pothole Region (PPR) of North Dakota, and evaluated the contribution of stored fat to (1) energy requirements for migration to their Arctic-breeding grounds and (2) nutrient needs for reproduction. All spring migrant WRSA (n = 124) and BASA (n = 111), and all but 2 of 99 SESA we collected were ≥2 years old. Male and female BASA migrated through North Dakota concurrently, male SESA averaged earlier than females, and WRSA males preceded females. Fat indices (ratio of fat to FFDM) of male and female SESA and WRSA averaged approximately twice those of male and female BASA. Total body fat of male and female BASA increased with date in spring 1980, but not in 1981; slopes were similar for both sexes each year. Male and female SESA arrived lean in 1980 and 1981, and total body fat increased with date in both years, with similar slopes for all combinations of sex and year. Male and female WRSA arrived lean in 1980–1981 and 1981, respectively, and total body fat increased with date, whereas females arrived with fat reserves already acquired in 1980. Interspecific and sex differences in migration schedules probably contributed to variation in fat storage patterns by affecting maintenance energy costs and food availability. Estimated flight ranges of BASA suggest that few could have met their energy needs for migration to the breeding grounds exclusively from fat stored by the time of departure from North Dakota. Estimated flight ranges of SESA and WRSA, along with fresh body masses of both species when live-trapped on or near their breeding grounds in northern Canada, suggest that major parts of both populations stored adequate fat by departure from temperate mid-continental ... |
author2 |
Haukos, D. A. |
format |
Article in Journal/Newspaper |
author |
Krapu, Gary L. Eldridge, Jan L. Gratto-Trevor, Cheri L. Buhl, Deborah A. |
spellingShingle |
Krapu, Gary L. Eldridge, Jan L. Gratto-Trevor, Cheri L. Buhl, Deborah A. Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
author_facet |
Krapu, Gary L. Eldridge, Jan L. Gratto-Trevor, Cheri L. Buhl, Deborah A. |
author_sort |
Krapu, Gary L. |
title |
Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
title_short |
Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
title_full |
Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
title_fullStr |
Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
title_full_unstemmed |
Fat Dynamics of Arctic-Nesting Sandpipers During Spring in Mid-Continental North America |
title_sort |
fat dynamics of arctic-nesting sandpipers during spring in mid-continental north america |
publisher |
Oxford University Press (OUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1093/auk/123.2.323 http://academic.oup.com/auk/article-pdf/123/2/323/29691764/auk323.pdf |
geographic |
Arctic Canada |
geographic_facet |
Arctic Canada |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Auk volume 123, issue 2, page 323-334 ISSN 1938-4254 0004-8038 |
op_doi |
https://doi.org/10.1093/auk/123.2.323 |
container_title |
The Auk |
container_volume |
123 |
container_issue |
2 |
container_start_page |
323 |
op_container_end_page |
334 |
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1809763338288103424 |